Suction muffler



Feb. 20, 1923. 5, 3 A. J. CHARLTON SUCTION MUFFLER Filed June 10, 1920 v l/VVENTOR ijf/mr/zozz BY mm 76 K A TTORNEYS A rod 39 is disposed in the holes of A cylindrical inner shell 32 is jQlTVJlLlBti having one of its circular ends disposed in the groove 2 of the end portion 1, and the other end disposed in the groove of the end portion 11.. A concentric outer shell is also provided having one of its ends disosed in the groove 5 of the end portion 1, and the other end disposed in the groove of the end portions ll. The inner shell has an opening 3d at the end nearest the end portion 11.

The end portions 1 and 11 are provided with the lugs 36 and 3'? 38 respectively.

the ln' 35 and 37, and a rod 40 is disposed in the holes of the lugs 36 and 38.

From the foregoing description of the various parts ofthe device, the operation thereof may be readily -understood. The

flexible driving shaft 25 is rotated by any suitable means, preferably by a fan shaft on the engine which is not shown in the drawing. When the explosion has occurred in the cylinders of the engine the expanded gas rushes down the exhaust pipe 5, through the passage-Way 9 and the ducts l0, where it enters the chamber 41. The revolving propeller blades create a vacuum which tends to obviate the backpressure usually encountered in a muflier. Furthermore, the propeller blades tend to render the discharge of the products of combustion more uniform, instead of having a series of in termittent discharges at high pressure which rality of ducts disposed through one end of said casing, said ducts being; positioned at an angle to'sald shaft whereby exhausted gases entering through said ducts are guided toward the periphery of said blades, and a discharge pipe carried by said caslng.

2. A muffler comprising pair of concentric cylinders, in the inner cylinder, a plurality of spaced apart fan blades mounted on said shaft, said blades being staggered With respect to each other, an inlet comprising a plurality of ducts disposed through one end of the inner of said cylinders and concentric the end of said shaft, said ducts being positioned at an angle to said shaft whereby exhausted gases entering through said ducts are guided toward the periphery of said blades, and means provided for discharging the gaseous contents of said inner cyl inder.

ALBERT JOHN CHARLTON a shaft rotatably disposed 

